As the possible failure of the malloc(), the not_checked and
checked could be NULL pointer.
Therefore, it should be better to check it in order to avoid
the dereference of the NULL pointer.
Fixes: b7aaf417f936 ("raw/ioat: add bus driver for device scanning automatically")
Cc: stable@dpdk.org
Signed-off-by: Shiqi Liu <835703180@qq.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
390c482276